Henry howard



@gatita faire stent @fficer Letters'Patent No.v 78,454, dated' June 1868.

IMPROVEMENT IN VALVEFGEAR POR STEAM-HEATING APPARATUS.

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To t ALL ivi-10M ITy Mar" ooNcEeN i Be itknown that I, HnlinrHewAnD, of Springfield, inthe county of Ham-pdemnnd' State-of'Massachnsetts, have made and invented a new and useful Combination-Valve for Steam-Heating Apparatus;` andl do hereby declare tliatthe following is a full, clear, and exact description of the construction andoperation of the same, reference heiligheid-to the annexed drawings, making a. part ot` this specification, in which- Figure l is au end elevation. i

Figure 2, a side elevation.. Figure 3, a horizontal section through the plane w-w.

Fgure'4, a vertical section through the plane y-z. l Figure 5,'a. perspective view oi"v valve andstemv- Figure 6, a bottom elevation of the valve-seat nut.

Figure?, a top elevation of the-hand-wheel; and

Figure 8, a top elevationot` the 'connection-bar.

My invention relates to theinduction and eduction-valves of lsteam-heating apparatus; the induction-valve being that through which the steam enters the radiators, coils, or other apparatus constituting the heater, and 4the eduction that through which the water of such steam, when-condensed, l eaves the hentai;1 and uds its way back to the boiler.` v

Heretofore, sc far as my knowledge extends, theinductiou and eduction-valves of such heating-apparatus have been arranged separately, and without mechanical connection, whereby cach of euch valves is operated independently of the other; but in all such apparatus such valves should be opened and closed nearly or quite simultaneously. 'This is not only a.' matter o convenience and ccon.omy,.but it' the induction-valve be opened while theeductionis closed, the steam admitted condenses, and the resulting water, having no'outlet, remains and cools inthe heater. Again, if the eduction-valve is opened whilethe induction is closed, any considerable pressure of steam inthe boiler forces water therefrom up into the heater, where it also remains and cools.

N ow, it often.. happens .that one valve is openedor closed, a's above indicated, without reference te the other, and Ain either case, when the valves are `again properly opened; and steam let into the heater, it eom'es in com tact with the cool water therein, and produces that loud', snapping noise, not .unfrequently'hcarm and other unpleasant, if not dangerous consequerioes, i

My invention, which-is intended to overcome these objections, vconsists in the combination and arrangement of the induction and eduction-valves in one case, so thatbot'h valves are opened and closed simultaneonslynd b y the same machinery.

I have also made certain improvements in the valve-stems and valve-seat nuts, for the purpose of making the device steam-tight, and furthcrfto facilitate the egress of water from the heater duriig'the ingress of steam, I provide the screw-threaded pipe connecting the vdouble-valve case' and heater with a partition, and,

of that part of the pipe thus partitioned o, which communicates with the induction-valve, I make an extcnsioni .some inch or more beyond the other halt'.` l In carrying ont my invention, I construct a do'nble-valvo case, F, forming therein twoirou'nd openings, extending through the same, and provide each end of such openigs with s female screwat the top, for-the insertion of the valve-seat nuts c c', und the bottom k 7c', fol; the insertion of the .ordinary pipes leading to and-.from the boiler. i

lI also constructl and provide the vdouble case F with a short screw-threaded pipe, G, which pipeiis to he screwed into p'socket on the heater, whereby the valves and heater are connected.

Frommase I, extending-through pipe G, and keeping ports 7i' h' quite separate, I provide a partition, H,

l M EIMkO all extension, I, of such partition, and that part ctpipe G communicating with port h', fig. 8, for the purpose of better conducting water from the heater during-'the ingress f steam,l

And further, I construct round, bevelle'd'valves gg', providing the same with stems e e,nnd pwvdn Wh `stems withc'onical enlargements ffjg. 5. v

Ialso construct valv'eseat nuts co', es secnin iig. 4, with o screw-thread at either ond, and a thin ring of metal separating such threads. V A

Through the centre 'ofnuts c c there is a. round opening, barelysuilicient for the passage of the stems s e', and at the bottom of thc'nuts I ,enlarge such opening in a conical formg'd df, .to correspond with the conical suini-gements ff.

The top s of nuts c c' are concave, seen at s s', and in suchconcavity I place a cotton-wicking, or other suitable pecking, over whijohlI screw the ordinarypackingmuts The stems'e e' are connected at the top by a bar, D, and thueseoured by nuts a a.

I also provide an operating-screw, E, which enters cose F, and passes up through bar'D.

Around 'the stem 'of screw E, and 'abovebxir D, I place a ferrule, C, land hond-wheel B, which latter is secured by the screw A.

I connect the several 'parte in the followingorder: screw E, bnr D, ferruleO, wheel -Band screw A.' I then insert `vulves g g' intheir cases, closing the tops thereof vwith sent-nuts c', and pnching-imts L b'. I then insert screw E in case F, and lconnect: stems e eby'the bar'D and .nnte a a.

Thus constructed and nrrnngedfit .is obvious that by turning wheel B, valves gg" are operated similitu neonsly; their ports' 7| t are opened und closed by the same operation, und that by turning'screirE the enlargementsff are drownup into the conical openings-d d', thus making the-top of the valve-cases steam-tight, when ports h h' are open for the admission of steam into the heaters,

It is also obvious thatin the application of my combinatidn-vlve to coils or coil-heaters, both. vends of the. pipes forming such heaters must be brought around nearly together, and entered-inl lthe same-socket into which is screwed pipe G.

' Having ,thus described the construction and operation lof my invention, what.I Iclaim therein es nemenddesrejto secure by Letters Patent, is' v 1. The double case F, in conibina'tion'with valves g g', vsubstantially,as herein' set forth.

2. The partitioned pipe G, formed on the' doublelvalve case F, asheren specified.'

8. The prolongation Lrformed-oufpipe G,- as herein specified.

4. The valve'jand stem c, in combination with the valve g .and stein e', bnr D, eerewll,` adycsseF. Suhl stantially as herein' specified.

. 'HENRY HOWARD.

Witnesses: f

JOHN M. Surname, Sluiter SANnsns. 

